iOS: Scanning QR codes with your iPhone should be a simple affair, but even our favorite app for the job has added a sign up process and other features that aren't really necessary. QR Code Simple offers only what you need to scan codes without anything else to get in the way.

There are a ton of QR code scanners for iPhone so it almost seems silly to highlight one above the…
Read more Read more

If all you want to do is scan a code, you can stay on the central scanning tab of the app and just point your iDevice's camera at the code. It'll pick it up really fast if you're in a well let area—so fast that I had to try about five times just to get a screenshot of the interface. If you don't have adequate light, the app has a flashlight button so you can scan more easily. On top of that, it allows you to access your history, visit any URLs in the code, and email the contents of the code to a friend or just copy it. If you have any problems, a built-in support tab will let you email the developer directly from the app (which is very generous considering the app costs you nothing). The point of the app is that it provides QR Code-related features that you want without bogging you down with things you don't. From what I can tell from my usage, that's exactly what it delivers.